Isn't there a joke that goes like:
Two hikers are planning to walk through Jellystone or somesuch, and go to a ranger for advice about bears. They say "We've been told we should wear little bells, and cover ourselves with pepper to deter the bears, is that right?"
"Well," says the warder, "It depends if they are black bears or brown bears."
"Oh dear!" said the hikers, "how can we tell which ones are around?"
"Well," says the ranger, "You gotta look for their poo. Black bear poo smells kinda sweet, and has fruit seeds in. Brown bear poo smells of pepper and has little bells in it...."